The Cosmobet sister sites in a nutshell
Cosmobet is operated by Santeda International B.V., a Curaçao-based operator. Its main sister sites include MyStake, Velobet, Rolletto, Goldenbet and Donbet. They sit in the same Santeda family, but they’re not interchangeable. MyStake is the big all-round platform, Velobet leans harder into sport, Rolletto is the cleaner comparison, Goldenbet gives the group a glossier wrapper, and Donbet is the mafia-themed sportsbook sibling. None of them gives UK players UKGC protection.
+ 100 Free Spins
Over 18's Only. T&C's apply. 18+. #Ad
up to £10,000
Over 18's Only. T&C's apply. 18+. #Ad
+ 200 Free Spins
Over 18's Only. T&C's apply. 18+. #Ad
+ 200 Free Spins
Over 18's Only. T&C's apply. 18+. #Ad
At a glance
Brand reviewed
Cosmobet
Operator
Santeda International B.V.
Licence position
Curaçao licence, not UK Gambling Commission
UK status
Off-limits to UK players
Theme
Outer space casino and sportsbook
Casino welcome package
Four 100% bonuses up to £500 each, plus up to 1,000 free spins
Last checked
22 May 2026
Santeda International gives Cosmobet scale, but not UK safety
Cosmobet belongs to the same Santeda International B.V. network as several well-known casino and sportsbook hybrids. That explains the product pattern: big bonus headlines, crypto-friendly banking, casino and sports in one place, and offshore licensing rather than British regulation. The comparison is therefore about product mood. MyStake gives scale, Velobet gives sport, Rolletto gives casino focus, Goldenbet gives gloss, and Donbet gives the sharper sportsbook edge.
MyStake
- Relationship: A major Cosmobet sister site and the group’s best all-round performer.
- Best for: Players outside Britain who want the largest casino, sportsbook and crypto footprint in the same family.
- Where it overlaps: Casino games, sports betting, crypto-led payments, big promotional language and the same risk profile.
- What feels different: MyStake feels like Santeda’s main platform. Cosmobet feels more themed, more sci-fi and more tightly packaged.
- My read: MyStake is the Santeda benchmark if scale matters more than Cosmobet’s space styling.
Velobet
- Relationship: A Cosmobet sister site with one of the best casino-and-sportsbook balances.
- Best for: Players outside Britain who want betting to feel as important as the casino lobby.
- Where it overlaps: Shared Santeda background, hybrid layout, crypto-friendliness, large bonus headlines, and similar support expectations.
- What feels different: Velobet sells the sportsbook lane more directly. Cosmobet dresses the hybrid idea in planets, missions and space language.
- Practical takeaway: Velobet is the better Santeda switch if the sportsbook matters more than the galaxy theme.
Rolletto
- Relationship: A casino-first Santeda site and Cosmobet’s best comparison.
- Best for: Players outside Britain who want Santeda’s casino side without the space theme doing so much of the talking.
- Where it overlaps: Slots, live casino, crypto use, big welcome language, licence context and familiar account habits.
- What feels different: Rolletto feels neater and more casino-led. Cosmobet has more colour, more theme and a heavier sports crossover.
- My read: Rolletto is the better sister site if you like the operator family but want casino play to be the centre of focus.
Goldenbet
- Relationship: A Cosmobet sister site with a more polished, premium-styled wrapper.
- Best for: Players outside Britain who like Cosmobet’s presentation but prefer a more conventional luxury look.
- Where it overlaps: Casino and betting mix, offshore licence concerns, crypto-friendly expectations and bonus-driven sign-up routes.
- What feels different: Goldenbet leans into gold, status and gloss. Cosmobet leans into space, motion and futuristic casino language.
- Practical takeaway: Goldenbet is the better comparison if Cosmobet’s theme feels too playful but the Santeda formula still appeals.
Donbet
- Relationship: A Santeda brand with a mafia-themed, sportsbook-led identity.
- Best for: Players outside Britain who want the operator’s betting side to feel darker, sharper and less polished.
- Where it overlaps: Santeda background, sports and casino crossover, offshore access issues, bonus-led acquisition and crypto expectations.
- What feels different: Donbet is the edgier sportsbook character in the family. Cosmobet is smoother, cleaner and more sci-fi.
- My read: Donbet is the comparison if Cosmobet’s space theme feels too soft and the betting product is the main attraction.
What the Santeda network means in practice
Santeda’s brands share more than ownership. They tend to rely on large bonuses, crypto-friendly cashier habits, hybrid casino-and-sportsbook layouts and international marketing. That gives players a recognisable pattern, but it also means the same caution points carry over from brand to brand: bonus cancellation rules, account checks, crypto withdrawal handling, and offshore complaint limits.
Cosmobet’s planets and missions make it feel different from MyStake, Velobet or Rolletto at first glance. In practical terms, the bigger question is whether the Santeda style suits you: crypto-forward, promotion-heavy, and outside the UK framework. If the answer is no, changing to another Santeda sister site will not fix the core issue.
Best picks by player type
Best if you want the biggest Santeda benchmark
MyStake is the obvious measuring stick if you want the operator’s largest sports-and-casino platform.
Best if sport leads the session
Velobet is the better Santeda switch if the sportsbook matters more than the casino theme.
Best if you want a casino before everything else
Rolletto is the strongest comparison if Cosmobet’s mixed casino-and-sport setup feels too busy.
Best if presentation matters
Goldenbet gives the Santeda setup a glossier and more conventional premium look.
Best if you want the harder betting sibling
Donbet is the sharper sportsbook choice if you want less space gloss and more old-school attitude.
Ownership, licensing and UK position
Cosmobet is operated by Santeda International B.V., a Curaçao-based gambling operator. It belongs to the same operator family as MyStake, Velobet, Rolletto, Goldenbet and Donbet.
The British position is clear. Cosmobet does not hold a UK Gambling Commission licence. That means players in Britain shouldn’t register, deposit or treat the Curaçao licence route as a substitute for UKGC oversight. The same warning applies to the Cosmobet sister sites around it.
This matters most if something goes wrong. UK players don’t get UKGC complaint protections, UK-approved ADR, or the same safer gambling framework. Offshore casinos can look modern and polished, but licence location still decides which protections sit behind the account.
The bonuses are big, busy and easy to mishandle
Cosmobet’s promotion page has volume. The problem is that the biggest numbers need careful handling. The casino welcome package, crypto welcome bonus, sports welcome offer, crypto cashback and weekly free spin deals all have their own activation rules, time limits, wagering targets and payment implications.
Casino welcome package
The main casino welcome package is advertised as up to 400% in bonuses plus 1,000 free spins. It’s split across the first four deposits. Each stage gives a 100% bonus up to £500, with a minimum deposit of £20. The reward must be activated in Profile → Bonuses after depositing. If you place a bet before claiming the bonus, the bonus will not be added.
The wagering requirement is 30x deposit plus bonus, which is much tougher than 30x bonus-only wagering. Deposited funds move into the bonus balance and count towards the requirement. Wagering must be completed within 7 days, applies to slots only, and carries a £5 maximum bet. Withdrawing before completion means cancelling the bonus.
The free spins depend on deposit size. Deposits from £20 to £99.99 receive 50 spins per stage, deposits from £100 to £199.99 receive 100 spins, and deposits of £200+ receive 250 spins. Spins are worth 10p, valid on The Cosmobet Greatest Catch, and expire 24 hours after crediting.
Crypto welcome bonus
The crypto first-deposit offer gives 200% up to £1,000 from a minimum first crypto deposit of £20. It’s for supported cryptocurrency deposits only and can be used on casino slots only. You must activate it before placing your first bet.
This version has 35x wagering on deposit plus bonus, a 7-day completion window and a £5 maximum bet. Excluded slots include Golden Beauty, Bronco Spirit, Reel Heist, Arcade Bomb, Hot 777 Deluxe, Gods of Troy, 1942: Sky Warrior, WBC Ring of Riches, Treasure Mine Power Reels and Classic Joker 6000.
Sports welcome bonus
The sports welcome offer gives 150% up to £1,000 from a minimum £20 first deposit. It’s sportsbook-only and must be activated before the first bet. The wagering requirement is 15x deposit plus bonus, with a 30-day deadline.
Qualifying bets need at least 3 selections, with minimum odds of 1.30 per selection. Outright bets, horse racing, greyhound racing, player-specific markets, cashed-out bets and void bets do not count. A maximum of £1,000 per bet applies while the bonus is active.
Crypto cashback and weekly spins
Cosmobet’s crypto cashback gives 10% back on monthly crypto losses, but it must be manually requested during the first 5 days of the following month by emailing promotions@cosmobet.com. Cashback is reviewed and credited by the 10th. It has 30x wagering, a £5 maximum bet and a 5x maximum withdrawal.
The recurring free spin offers are simpler but still conditional. Tuesday’s offer gives 50 free spins on Bgaming’s Book of Pyramids after a £50 Tuesday deposit and promo code TUESDAY50. Sunday’s offer gives 50 free spins on Bgaming’s Miss Cherry Fruits after a £50 Sunday deposit and promo code FUNDAY50. In both cases, the code must be activated within 2 hours of depositing.
Players need to be cautious with all of this. Cosmobet has plenty of offers, but the real risk is attention. You need to activate rewards before betting, watch 7-day deadlines, handle deposit-plus-bonus wagering, avoid excluded games, keep within max-bet rules and understand withdrawal limits. Casual players can easily make a mistake here.
Payments, withdrawals and KYC
Cosmobet clearly favours cryptocurrency. Its payments area includes a beginner’s guide to buying crypto and specifically recommends Coinbase. The accepted crypto options include Bitcoin, Tether and Ethereum, among others. That tells you the site is built for players who are already comfortable with coin-based deposits and withdrawals.
Traditional payment options are also available. The confirmed non-crypto routes include MiFinity, AstroPay, Visa and Mastercard. Those methods make the cashier accessible to non-crypto players, but they don’t change the overall personality of the site. This is still a crypto-forward casino and sportsbook.
Every withdrawal is subject to an estimated processing time of 3 working days, regardless of method. That is at least clear, but it’s not especially quick. The awkward rule is the restriction linked to your last deposit. Withdrawals aren’t permitted if any funds from your last deposit remain. That can create friction because the cashier is looking at more than withdrawable winnings. It’s also looking at whether the latest deposit still sits in the balance picture.
This set of rules makes me wary. Crypto users may like the coin range and the clear focus on digital currency. Card and e-wallet players should be more careful. A 3-working-day estimate, unclear limits, and a last-deposit balance restriction mean I would test nothing large at first. KYC, source-of-funds, address checks, payment ownership checks and account reviews can still slow everything down.
The space theme is Cosmobet’s best asset
Cosmobet has one clear advantage over several of its sister sites: it knows what it wants to look like. The space theme gives the casino an immediate identity, and the bonus language keeps circling back to planets, missions and cosmic rewards. It can get a bit much, but at least the site has a memorable style.
The theme fits the product mix better than it might at first appear. Cosmobet is built for movement: casino, sportsbook, crypto deposits, casino bonuses, sports bonuses, cashback, Tuesday spins and Sunday spins. It’s a site for players who like lots of buttons, boosts and routes rather than a calm casino lobby.
That’s also the weakness. Cosmobet asks the player to manage a lot: activation before betting, 7-day wagering windows, excluded games, deposit-plus-bonus wagering, cashback request dates and withdrawal restrictions. The theme is fun. The terms need discipline.
Support and complaints
Cosmobet gives players live chat and email routes, which is what I would expect from a crypto-heavy offshore casino. The setup is serviceable, but it lacks the complaint structure British players are used to from UKGC-licensed sites.
Support email: support@cosmobet.com
Promotions email: promotions@cosmobet.com, used for crypto cashback requests
Live chat: Available through the Cosmobet site
Phone number: No customer support phone number listed
UK ADR: None. Cosmobet is not a UKGC-licensed operator
For a Cosmobet complaint, keep everything chronological: bonus activation screen, deposit method, crypto transaction hash where relevant, bonus balance, wagering progress, excluded game checks, max-bet compliance, cashback request email, withdrawal request, last-deposit balance status, live chat transcript and KYC messages. The likely dispute points are activation timing, bonus cancellation, crypto cashback, withdrawal eligibility and account verification.
What I like, and what I don’t
What I like
- The space theme gives Cosmobet a clearer identity than many offshore casino-and-sportsbook hybrids.
- The bonus range is broad, with casino, crypto, sportsbook, cashback and free spin routes.
- Crypto players get a cashier built around Bitcoin, Tether, Ethereum and other coin routes.
- Support and promotions emails are visible, and live chat is available through the site.
What I don’t
- Cosmobet is not UKGC-licensed, so it is off-limits to players in Britain.
- The casino welcome bonuses use 30x wagering on deposit plus bonus, which is much tougher than the headline suggests.
- The crypto first-deposit bonus has 35x wagering on deposit plus bonus and only 7 days to clear it.
- The cashier has a 3-working-day withdrawal estimate and a restrictive last-deposit balance rule.
- There is no UK ADR route, no GAMSTOP coverage and no customer support phone number.
My final verdict on the Cosmobet sister sites
Cosmobet is one of Santeda’s better-dressed brands. The theme works, the casino-and-sportsbook mix is clear, and the crypto angle is stronger than a token cashier add-on. The real test is whether a player can tolerate the Santeda style: offshore licence, big bonuses, strict activation rules, deposit-plus-bonus wagering, crypto-first banking and slower withdrawal expectations. For players outside Britain who accept that trade-off, Rolletto is the best casino comparison, Velobet is the better sports balance, MyStake is the scale play, Goldenbet is the glossier wrapper, and Donbet is the harder sportsbook sibling. For UK players, the answer doesn’t require much debate. Choose a UKGC-licensed alternative instead.
FAQs about Cosmobet sister sites
Does Cosmobet have sister sites?
Yes. Cosmobet sits in the Santeda International B.V. family with sister sites including MyStake, Velobet, Rolletto, Goldenbet and Donbet.
Who operates Cosmobet?
Cosmobet is operated by Santeda International B.V., a Curaçao-based gambling operator.
Is Cosmobet legal for UK players?
No. Cosmobet does not hold a UK Gambling Commission licence, so it is off-limits to players in Britain.
Which Cosmobet sister site is closest?
Rolletto is the closest casino-first comparison, while Velobet is closer if sports betting matters more. MyStake is the biggest all-round Santeda comparison.
Is MyStake a Cosmobet sister site?
Yes. MyStake is part of the same Santeda International B.V. operator family and is the largest all-round platform in the group.
What is the main Cosmobet casino welcome package?
The main casino welcome package offers four 100% bonuses up to £500 each, plus up to 1,000 free spins in total. Each deposit stage has a £20 minimum deposit and 30x wagering on deposit plus bonus.
What is the Cosmobet crypto welcome bonus?
The crypto welcome bonus gives 200% up to £1,000 from a minimum £20 first crypto deposit. It has 35x wagering on deposit plus bonus, a 7-day deadline and a £5 maximum bet.
What is the Cosmobet sports welcome bonus?
The sports welcome bonus gives 150% up to £1,000 from a minimum £20 first deposit. It has 15x wagering on deposit plus bonus, a 30-day deadline, and qualifying bets need at least 3 selections with minimum odds of 1.30 per selection.
Does Cosmobet have crypto cashback?
Yes. Cosmobet offers 10% cashback on monthly crypto losses, but it must be manually requested during the first 5 days of the next month. It has 30x wagering and a 5x maximum withdrawal.
What payment methods does Cosmobet use?
Cosmobet is crypto-focused and accepts Bitcoin, Tether, Ethereum and other cryptocurrencies. It also supports MiFinity, AstroPay, Visa and Mastercard.
How long do Cosmobet withdrawals take?
The estimated withdrawal processing time is 3 working days, regardless of payment method.
Can I withdraw if my last Cosmobet deposit still has funds left?
No. The banking information says withdrawals are not permitted if there are any remaining funds from your last deposit.
Does Cosmobet have a support phone number?
No customer support phone number is listed. Cosmobet support is available through live chat and support@cosmobet.com.
Does Cosmobet have a UK ADR route?
No. Cosmobet is not UKGC-licensed, so UK players do not have access to a UK-approved ADR route through this operator.